MATERIAL SAFETY DATA SHEET National Welders
P.O. Box 31007
Charlotte, NC 28231, 704-333-5475
Emergency Telephone: 800-866-4422
ChemTrec: 800-424-9300
MAJOR SUPPLIERS OF CRYOGENICS AND WELDING EQUIPMENT
MSDS # N0244472
Issue/Revision Date: 01-Aug-98
SECTION 1. MATERIAL IDENTIFICATION
NFPA CODE 704/ HMIS
CAS # C3H6 = 115-07-1
Product Name
N2 = 7727-37-9 1
Less Than 5.5 % Propylene in Nitrogen Health
0
Fire
Reactivity 0
None
Special Hazard
Trade Name And Synonym DOT Identification No
Compressed Gas, n.o.s. (D.O.T.) UN-1956
Chemical Name And Synonyms DOT Hazard Class
<5.5 Molar % Propylene in Nitrogen Division 2.2
Formula Chemical Family Description
Instrument (analyzer) calibration gas standard
<5.5 Molar % C3H6 in N2 Gas Mixture
SECTION 2. HEALTH HAZARD INFORMATION
Time Weighted Average Exposure Limit
These mixtures should be considered simple asphyxiants; propylene TWA = none listed, with an A4 (not classifiable as
a human carcinogen) carcinogen rating (ACGIH 1998). OSHA 1995 does not list either propylene or nitrogen. Oxygen
levels should be maintained at greater than 18 Molar percent at normal atmospheric pressure (pO2>135 torr).
Symptoms Of Exposure
Effects of exposure to high concentrations so as to displace the oxygen in air necessary for life may include ANY, ALL or
NONE of the following:
* Loss of balance or dizziness
* Tightness in the frontal area of the forehead
* Tingling of the tongue, fingertips or toes
* Weakened speech leading to the inability to utter sounds
* Rapid reduction in the ability to perform movements
* Reduced consciousness of the surroundings
* Loss of tactile sensations
* Heightened mental activity
It should be recognized that it is possible that none of the above symptoms may occur in gas asphyxia so that there are
no DEFINITE warning symptoms.
Toxicological Properties
These mixtures are nontoxic but the liberation of a large amount in a confined area could displace the amount of oxygen
in air necessary to support life.
Neither propylene nor nitrogen are listed in the IARC, NTP or by OSHA as a carcinogen or potential carcinogen.
Persons in ill health, where such illness would be aggravated by exposure to these mixtures, should not be allowed to
work with or handle this product.
Recommended First Aid Treatment
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MSDS # N0244472
Issue/Revision Date: 01-Aug-98
PROMPT MEDICAL ATTENTION IS MANDATORY IN ALL CASES OF OVEREXPOSURE TO THESE MIXTURES.
RESCUE PERSONNEL SHOULD BE EQUIPPED WITH SELF-CONTAINED BREATHING APPARATUS.
INHALATION: Conscious persons should be assisted to an uncontaminated area and inhale fresh air. Quick removal
from the contaminated area is most important. Unconscious persons should be moved to an uncontaminated area, given
assisted respiration and supplemental oxygen. Further treatment should be symptomatic and supportive.
SECTION 3. PHYSICAL DATA
Boiling Point Liquid Density at Boiling Point
C3H6 = -53.9癋 (-47.7癈) C3H6 = 38.3 lb/ft3 (613.5 kg/m3)
N2 = -320.5癋 (-195.8癈) N2 = 50.46 lb/ft3 (808.3 kg/m3)
Vapor Pressure @ 70?F (21.1癈) Gas Density at 70癋 1 ATM
C3H6 = 151 psia (1041 kPa) .0725 - .0731 lb/ft3 (1.161 - 1.171 kg/m3)
N2 = Above the critical temperature
Solubility In Water Freezing Point
Negligible C3H6 = -301癋 (-185癈)
N2 = -345.9癋 (-209.9癈)
Evaporation Rate Specific Gravity (AIR = 1)
N/A (Gas) @ 70癋 (21.1癈) = 0.97 - 0.98
Appearance And Odor
Colorless gas with very slight olefinic odor
SECTION 4. FIRE AND EXPLOSION HAZARD DATA
Flash Point Auto Ignition Temperature Flammable Units Percent by Volume
N/A N/A LEL N/A UEL N/A
Extinguishing Media Electrical Classification
Nonflammable Gas Nonhazardous
Special Firefighting Procedure Unusual Fire and Explosion Hazards
If cylinders are involved in a fire, safely relocate or keep N/A
cool with water spray.
Hazardous Mixtures Of Other Liquids,Solids or Gases
None
SECTION 5. REACTIVITY DATA
Stability Conditions To Avoid Hazardous Polymerization Conditions To Avoid
Unstable None None
May Occur
Stable Will Not Occur
Hazardous Decomposition Products
Incompatibility; (Materials to Avoid)
None None
SECTION 6. SPILL, LEAK AND DISPOSAL PROCEDURES
Steps to be taken in Case Material is Released or Spilled
Evacuate all personnel from affected area. Use appropriate protective equipment. If leak is in container or container
valve, contact your closest supplier location or call the emergency telephone number listed herein.
Waste Disposal
Do not attempt to dispose of waste or unused quantities. Return in the shipping container, PROPERLY LABELED, WITH
ANY VALVE OUTLET PLUGS OR CAPS SECURED AND VALVE PROTECTION CAP IN PLACE, to your supplier. For
emergency disposal assistance, contact your closest supplier location or call the emergency telephone number listed
herein.
SECTION 7. SPECIAL PROTECTION INFORMATION
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MSDS # N0244472
Issue/Revision Date: 01-Aug-98
Respiratory Protection
Positive pressure air line with mask or self-contained breathing apparatus should be available for emergency use.
Ventilation Local Exhaust Special
To prevent accumulation of high
See Local N/A
concentrations so as to reduce the oxygen
Exhaust
level in the air to less than 18 Molar percent.
Mechanical Other
N/A N/A
Protective Gloves Eye Protection
Any material Safety goggles or glasses
Other Protective Equipment
Safety shoes
SECTION 8. SPECIAL PRECAUTIONS AND COMMENTS
Special Labeling Information
DOT Shipping Name: Compressed Gas, n.o.s. DOT Hazard Class: Division 2.2
DOT Shipping Label: Nonflammable Gas I.D. No.: UN 1956
Special Handling Recommendations
Use only in well-ventilated areas. Valve protection caps must remain in place unless cylinder is secured with valve outlet
piped to use point. Do not drag, slide or roll cylinders. Use a suitable hand truck for cylinder movement. Use a pressure
reducing regulator when connecting cylinder to lower pressure (<3,000 psig) piping or systems. Do not heat cylinder by
any means to increase the discharge rate of product from the cylinder. Use a check valve or trap in the discharge line to
prevent hazardous back flow into the cylinder.
For additional handling recommendations, consult Compressed Gas Association Pamphlets P-1, P-9, P-14, and Safety
Bulletin SB-2.
Special Storage Recommendations
Protect cylinders from physical damage. Store in cool, dry, well-ventilated area away from heavily trafficked areas and
emergency exits. Do not allow the temperature where cylinders are stored to exceed 125癋 (52癈). Cylinders should be
stored upright and firmly secured to prevent falling or being knocked over. Full and empty cylinders should be
segregated. Use a "first in - first out" inventory system to prevent full cylinders from being stored for excessive periods
of time.
For additional storage recommendations, consult Compressed Gas Association Pamphlets P-1, P-9, P-14, and Safety
Bulletin SB-2.
Special Packaging Recommendations
These mixtures are noncorrosive and may be used with any common structural materials.
Other Recommendations or Precautions
Compressed gas cylinders should not be refilled except by qualified producers of compressed gases. Shipment of a
compressed gas cylinder which has not been filled by the owner or with his (written) consent is a violation of Federal Law
(49CFR).
Always secure cylinders in an upright position before transporting them. NEVER transport cylinders in trunks of vehicles,
enclosed vans, truck cabs or in passenger compartments. Transport cylinders secured in open flatbed or in open pickup
type vehicles.
Special Notes
Propylene is considered a toxic chemical and is subject to the reporting requirements of SARA, Title III, Section 313.
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MSDS # N0244472
Issue/Revision Date: 01-Aug-98
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